import { createAdminClient } from '@spree/admin-sdk'

const client = createAdminClient({
  baseUrl: 'https://your-store.com',
  secretKey: 'sk_xxx',
})

const discount = await client.orders.discounts.update('or_UkLWZg9DAJ', 'disc_UkLWZg9DAJ', {
  label: 'Customer appeasement',
  amount: '15.00',
})

spree api patch /orders/{order_id}/discounts/{id} -d '{"label":"Customer appeasement","amount":"15.00"}'

{
  "id": "disc_UkLWZg9DAJ",
  "label": "Loyalty reward",
  "kind": "manual",
  "code": null,
  "value_type": null,
  "value": null,
  "promotion_id": null,
  "line_item_id": "li_UkLWZg9DAJ",
  "fulfillment_id": null,
  "amount": "-5.00",
  "metadata": {},
  "created_at": "2026-01-15T12:00:00.000Z",
  "updated_at": "2026-01-15T12:00:00.000Z"
}